public class H {
  public static void main (String args[]){
    int [] a={10,20,30,40},b[]={{1,2},{4,5,6,7}};
    b[0] =a;
    b[0][1]=b[1][3];
    System.out.println(b[0][3]);
    System.out.println(a[1]);
  }
}  
